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MongoDB query to update an array using FindAndUpdate()?
To update an array, instead use findAndModify() in MongoDB. Let us create a collection with documents −
> db.demo152.insertOne({"id":102,"Name":["Chris","David"],Score:45});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3515bcfdf09dd6d08539dd")
}
> db.demo152.insertOne({"id":103,"Name":["Mike","Carol"],Score:65});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3515cafdf09dd6d08539de")
}Display all documents from a collection with the help of find() method −
> db.demo152.find();
This will produce the following output −
{ "_id" : ObjectId("5e3515bcfdf09dd6d08539dd"), "id" : 102, "Name" : [ "Chris", "David" ], "Score" : 45 }
{ "_id" : ObjectId("5e3515cafdf09dd6d08539de"), "id" : 103, "Name" : [ "Mike", "Carol" ], "Score" : 65 }Following is the query to update an array −
> var d = db.demo152.findAndModify({
... query: {
... id:102,
... Score: {$lt:50},
... Name: "Chris"
... },
... update: {
... $set : {"Name.$": "Robert"},
... $inc: {Score: 20 }
... }
... }
...
... )Display all documents from a collection with the help of find() method −
> db.demo152.find();
This will produce the following output −
{ "_id" : ObjectId("5e3515bcfdf09dd6d08539dd"), "id" : 102, "Name" : [ "Robert", "David" ], "Score" : 65 }
{ "_id" : ObjectId("5e3515cafdf09dd6d08539de"), "id" : 103, "Name" : [ "Mike", "Carol" ], "Score" : 65 }
Updated on: 01-Apr-2020
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